Process for manufacturing shells for bodies of ships



Nuv'. 4 1924. 1,514,351

w. F. H. STRELOW PROCESS FOR MANUFACTURING SHELLS FOR BODIES OF SHIPS Filed Oct. 5. 1921 WEfi. 5fre/ow Patented Nov. 4, 1924. I

UNITED STATES PATENT OFFICE.

WALDO FRIEDRICH HERRMANN STRETJOW, OF HAMBURG, GERMANY.

PROCESS FOR IMLANUFACTURING SHELLS FOR BODIES F SHIPS.

Application filed October 5, 1921. Serial 30. 505,549.

To all whom it may concern: shell of a ship body, comprising, forming a Be it known that I, WALDO FRIEDRICH sheet of sufficient size to form a complete HERRMANN STRELOW, citizen of Germany, reshell by means of connecting togethera plusiding at Hamburg, Germany, have invented rality of relatively small metal plates, then 9 certain new and useful Im rovements in a bending the thus formed sheet about :1 Ion- Process for Manufacturing ghells for Bodies gitudinal center line to form the com lete of Ships, of which the following is a specifishell, fitting a stem to the bent metal s eet, cation. V inserting ribs and stringers into the shell,

The present invention refers to a process fitting a bulkhead to the rear portion of the 45. 10 for manufacturing the outer shells of the shell, and attaching a stern to the shell and bodies of ships. The object of the invention the bulkhead. is to simplify the manufacturing of such 2. A boat hull comprising, a fabricated shells. metal sheet shaped to form the major por- Fig. 1 shows the body of a ship built up tion of the hull, a stem fitted to the metal i according to the present invention. hull, ribs and stringers positioned inside the Fig. 2 is a diagrammatical view, illustratmetal hull, a separate bulkhead closing the ing the method of manufacture. rear of the hull, and a shaped metal stern According to the present invention the fitted to the rear of the hull, and connected shell is made of a single sheet, built up by to the bulkhead andv the fabricated metal 55 riveting or otherwise connecting relatively sheet.

small metal plates a, to form a relatively 3. A method for forming a sheet metal large, continuous sheet. The thus formed shell of a ship body comprising, forming sheet is then bent upwards, beginning at its a sheet of suflicient size to form a complete longitudinal center line, to form a shell I) shell by means of connecting together a 60 as shown in Fig. 2 in dotted lines. After plurality of relatively small metal plates,

having been bent to this shape, a stem 0, a then bending the thus formed sheet of a lonframe d, stringers e and bulkheads f, are atgitudinal center line to form the complete tached within the-'shelLand finally a stern g, shell, fitting a bulkhead to the rear portion preferably of sheet metal, and brought to of the shell, and attaching a stern to the 65. the desired form in any usual manner, is shell and the bulkhead.

fastened to the stern end of the body. Thus it will be seen that the bodies of ships are WALDO FRIEDRICH H M N TRELOW built up with great facility and in a comparatively short space of time. Witnesses:

I claim: ,EmL HAGER,

1. A method for forming asheet metal I Pn'ma LAUER. 

